<template>
  <div>
    <!-- 面包屑导航区 -->
    <hamburger :secTitle="secTitle" :thirdTitle="thirdTitle"></hamburger>
    <!-- 卡片区域 -->
    <el-card class="box-card">
      <!-- 提示区域 -->
      <el-alert title="添加商品信息" type="info" center show-icon :closable="false"></el-alert>
      <!-- 步骤条 -->
      <el-steps :active="activeIndex-0" finish-status="success" align-center>
        <el-step title="基本信息"></el-step>
        <el-step title="商品参数"></el-step>
        <el-step title="商品属性"></el-step>
        <el-step title="商品图片"></el-step>
        <el-step title="商品内容"></el-step>
        <el-step title="完成"></el-step>
      </el-steps>
      <!-- 侧边标签页 -->
      <el-form
        :model="addForm"
        :rules="addFormRules"
        ref="addFormRulesRef"
        label-width="100px"
        label-position="top"
      >
        <el-tabs
          :tab-position="'left'"
          v-model="activeIndex"
          :before-leave="befLeave"
          @tab-click="tabClicked"
        >
          <el-tab-pane label="基本信息" name="0">
            <el-form-item label="商品名称" prop="goods_name">
              <el-input v-model="addForm.goods_name"></el-input>
            </el-form-item>
            <el-form-item label="商品价格" prop="goods_price">
              <el-input v-model="addForm.goods_price" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品重量" prop="goods_weight">
              <el-input v-model="addForm.goods_weight" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品数量" prop="goods_number">
              <el-input v-model="addForm.goods_number" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品分类" prop="goods_cat">
              <el-cascader
                v-model="addForm.goods_cat"
                :options="cateList"
                size="medium"
                :props="cascaderProps"
                expandTrigger="hover"
                @change="cascaderChanged"
              ></el-cascader>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品参数" name="1">
            <el-form-item
              :label="item1.attr_name"
              v-for="item1 in manyAttrList"
              :key="item1.attr_id"
            >
              <el-checkbox-group v-model="item1.attr_vals">
                <el-checkbox :label="cb" v-for="(cb,i) in item1.attr_vals" :key="i" border></el-checkbox>
              </el-checkbox-group>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品属性" name="2">
            <el-form-item
              :label="item2.attr_name"
              v-for="item2 in onlyAttrList"
              :key="item2.attr_id"
            >
              <el-input v-model="item2.attr_vals"></el-input>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品图片" name="3">
            <el-upload
              :action="uploadUrl"
              :on-preview="handlePreview"
              :on-remove="handleRemove"
              list-type="picture"
              :headers="headerObj"
              :on-success="uploadSuccess"
            >
              <el-button size="small" type="primary">点击上传</el-button>
            </el-upload>
          </el-tab-pane>
          <el-tab-pane label="商品内容" name="4">
            <quill-editor v-model="addForm.goods_introduce"></quill-editor>
            <el-button type="info" plain class="btn" @click="addGoods">添加商品</el-button>
          </el-tab-pane>
        </el-tabs>
      </el-form>
    </el-card>
    <!-- 显示图片对话框 -->
    <el-dialog title="提示" :visible.sync="dialogVisible" width="50%">
      <img :src="imgUrl" alt class="previewImg" />
    </el-dialog>
  </div>
</template>

<script>
import _ from 'lodash'
export default {
  data() {
    return {
      secTitle: '商品管理',
      thirdTitle: '添加商品',
      activeIndex: '0',
      addForm: {
        goods_name: '',
        goods_price: 0,
        goods_weight: 0,
        goods_number: 0,
        goods_cat: [],
        pics: [],
        goods_introduce: '',
        attrs: [],
      },
      addFormRules: {
        goods_name: [
          { required: true, message: '请输入商品名称', trigger: 'blur' },
        ],
        goods_price: [
          { required: true, message: '请输入商品价格', trigger: 'blur' },
        ],
        goods_weight: [
          { required: true, message: '请输入商品重量', trigger: 'blur' },
        ],
        goods_number: [
          { required: true, message: '请输入商品数量', trigger: 'blur' },
        ],
        goods_cat: [
          { required: true, message: '请选择商品分类', trigger: 'blur' },
        ],
      },
      cateList: [],
      cascaderProps: {
        value: 'cat_id',
        label: 'cat_name',
        children: 'children',
        expandTrigger: 'hover',
      },
      manyAttrList: [],
      onlyAttrList: [],
      uploadUrl: 'http://127.0.0.1:8888/api/private/v1/upload',
      headerObj: {
        Authorization: window.sessionStorage.getItem('token'),
      },
      dialogVisible: false,
      imgUrl: '',
    }
  },
  created() {
    this.getCateList()
  },
  methods: {
    async getCateList() {
      const { data: res } = await this.$http.get('categories')
      if (res.meta.status !== 200) {
        return this.$message.error('获取分类列表失败')
      } else {
        // console.log(res.data)
        this.cateList = res.data
      }
    },
    cascaderChanged() {
      if (this.addForm.goods_cat.length !== 3) {
        this.addForm.goods_cat = []
        return
      }
    },
    befLeave(newtab, oldtab) {
      if (oldtab == '0' && this.addForm.goods_cat.length !== 3) {
        this.$message.error('请先选择商品分类！')
        return false
      }
      // console.log(this.addForm)
    },
    async tabClicked() {
      // console.log(this.activeIndex)
      if (this.activeIndex === '1') {
        const { data: res } = await this.$http.get(
          `categories/${this.cateId}/attributes`,
          {
            params: { sel: 'many' },
          }
        )
        if (res.meta.status !== 200) {
          return this.$message.error('获取动态参数列表失败')
        } else {
          res.data.forEach((item) => {
            item.attr_vals =
              item.attr_vals.length === 0 ? [] : item.attr_vals.split(' ')
          })

          this.manyAttrList = res.data
          //   console.log(this.manyAttrList)
        }
      } else if (this.activeIndex === '2') {
        const { data: res } = await this.$http.get(
          `categories/${this.cateId}/attributes`,
          {
            params: { sel: 'only' },
          }
        )
        if (res.meta.status !== 200) {
          return this.$message.error('获取动态参数列表失败')
        } else {
          //   res.data.forEach(item => {
          //     item.attr_vals =
          //       item.attr_vals.length === 0 ? [] : item.attr_vals.split(' ')
          //   })

          this.onlyAttrList = res.data
        }
      }
    },
    handlePreview(file) {
      this.imgUrl = file.response.data.url
      this.dialogVisible = true
    },
    handleRemove(file) {
      console.log(file)
      const filePath = file.response.data.tmp_path
      const index = this.addForm.pics.findIndex((item) => item.pic === filePath)
      this.addForm.pics.splice(index, 1)
    },
    uploadSuccess(response) {
      // console.log(response)
      const picPath = { pic: response.data.tmp_path }
      this.addForm.pics.push(picPath)
      // console.log(this.addForm.pics)
    },
    addGoods() {
      this.$refs.addFormRulesRef.validate(async (valid) => {
        if (!valid) return this.$message.error('请填写必要的表单项!')
        const newForm = _.cloneDeep(this.addForm)
        newForm.goods_cat = newForm.goods_cat.join(',')
        //处理动态参数
        this.manyAttrList.forEach((item) => {
          newForm.attrs.push({
            attr_id: item.attr_id,
            attr_value: item.attr_vals.join(' '),
          })
        })
        //处理静态参数
        this.onlyAttrList.forEach((item) => {
          newForm.attrs.push({
            attr_id: item.attr_id,
            attr_value: item.attr_vals,
          })
        })
        const { data: res } = await this.$http.post('goods', newForm)
        if (res.meta.status !== 201) {
          return this.$message.error('创建商品失败')
        }
        this.$message.success('创建商品成功')
        this.$router.push('/goods')
      })
    },
  },
  computed: {
    cateId() {
      if (this.addForm.goods_cat.length === 3) {
        return this.addForm.goods_cat[2]
      }
      return null
    },
  },
}
</script>

<style lang="less" scoped>
.el-checkbox {
  margin: 0 5px 0 0 !important;
}
.previewImg {
  width: 100%;
}
.btn {
  margin-top: 15px;
}
</style>